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alex41 [277]
3 years ago
10

Please help me with this, Thank You.

Mathematics
2 answers:
Korolek [52]3 years ago
8 0
Answer: B) 5x - 4

Perimeter = Side + Side + Side

Step-by-Step Explanation

=> 9x + 1 (1)
=> x - 1 (2)
=> 3x + 6 (3)

Adding 1 and 2, we get :-
=> 4x + 5 (4)

Thus, we can find the 3rd side by subtracting the Sum of the 2 Sides from
the Perimeter of the Triangle.

Subtracting 4 from 1, we get :-
=> 5x - 4

Therefore, 5x - 4 is the 3rd Side Length.
Nadusha1986 [10]3 years ago
7 0

Answer:

missing side is 5x - 4

Step-by-step explanation:

x - 1 + ( 3x + 6 ) + third side = 9x + 1

x - 1 + 3x + 6 + third side = 9x + 1

4x + 5 + third side = 9x + 1

third side = 9x + 1 - ( 4x + 5 )

third side = 9x + 1 - 4x - 5

third side = 5x - 4

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